"It was just a typical night at the studio, but then again, not so typical cause I did something extra special, out of the ordinary," Green told People. "I went and purchased a ring that we had seen together, maybe four or five months or so prior. I went back and purchased the ring and I just kind of had it stashed away in some old equipment. And I said, 'Will you reach in there and grab something for me?'"

According to the latest photos of James' left hand on the red carpet, Green picked out quite the sparkler. (Check it out above.)

"It was the most beautiful diamond ring I had ever seen in my life. It was lit up by a light," James described. "I said, 'Babe, I can't believe it.' He said, 'You've been such a good woman. You're such and amazing person. You're my life partner. You're my best friend. I want to share the rest of my life with you.'"

Green, who was previously married to Christina Johnson until their divorce in 2005, admitted they purposefully kept their engagement under wraps until they were truly ready to go public.

"Truth be told, it's not something we wanted to promote," the former "Voice" coach said. "We're a collective power together because our private life is sacred. But you know what though, maybe it's time. Maybe it is time for the world to know that I have a very secure situation and a loving woman supporting me the entire way."

"I appreciate her openness and willingness to love unconditionally," Green said of his fiancée. "She's been so sweet to me through a number of different trials that come to test the resilience of a union to deem whether it's worthy or not, whether it's durable or strong enough.

"I think now that I'm describing it as she's standing here, it's kind of, surreal because it's not exaggerated. It's absolutely true. It's absolutely our private life," he said. "This is my first time putting it into words."